On Thu, Jul 11, 2013 at 8:07 PM, Kjell Otto <otto.kjell@gmail.com> wrote:

Have you tried to delete the .Xauthority File in the users Homefolder?

I have now.

On the client I log:

Loop: PANIC! The remote NX proxy closed the connection. Loop: PANIC! Failure negotiating the session in stage '7'. Loop: PANIC! Wrong version or invalid session authentication cookie.

On the server, the session log shows:

running as X2Go Agent

NXAGENT - Version 3.5.0

Copyright (C) 2001, 2011 NoMachine. See http://www.nomachine.com/ for more information.

Info: Agent running with pid '2543'. Session: Starting session at 'Mon Jul 15 11:50:05 2013'. Info: Proxy running in server mode with pid '2543'. Info: Waiting for connection from 'localhost' on port '30001'. Warning: Refusing connection from '192.168.1.3'. Error: Connection with remote host 'localhost' could not be established. Error: Aborting session with 'Unable to open display 'nx/nx,options=/home/roland/.x2go/C-roland-50-1373881804_stDUNITY_dp24/options:50''. Session: Aborting session at 'Mon Jul 15 11:50:55 2013'. Session: Session aborted at 'Mon Jul 15 11:50:55 2013'.

This makes me think. I port forward port 22 through the ADSL router (which has 192.168.1.1 as LAN ethernet address and the server has 192.168.1.3). Could this have something to do with the problem? What is port 30001 used for and should I allow that through the firewall? Surely port 22 should be enough?

I have also turned apparmor off, but it makes no difference.

thanks again

Roland

Please Try that first. Your log seems to be completely normal so far... Do you have a Desktop you can shadow to? I mean if there is no MasterSession opened, then you can't shadow it...

Best regards, Kjellski

2013/7/11 Roland Giesler <roland@giesler.za.net>

...

On Thu, Jul 11, 2013 at 9:22 AM, Kjell Otto <otto.kjell@gmail.com> wrote:

...

Hi Roland,

have you seen what's mentioned here:

http://developer.berlios.de/bugs/?func=detailbug&bug_id=18258&group_id=2978

Here's what my server log has.

Jul 11 15:14:54 Ashton /usr/bin/x2golistdesktops[30895]: x2golistdesktops has been called without options Jul 11 15:14:54 Ashton /usr/bin/x2golistsessions[30899]: x2golistsessions has been called with options: x2goserver Jul 11 15:14:58 Ashton /usr/bin/x2gostartagent: x2gostartagent called with options: 1440x900 adsl 16m-jpeg-9 unix-kde-depth_24 us pc105/us 1 S 1XSHADrolandXSHAD:0 Jul 11 15:14:58 Ashton /usr/bin/x2gosessionlimit[30961]: x2gosessionlimit has been called Jul 11 15:14:58 Ashton /usr/bin/x2golistsessions[30964]: x2golistsessions has been called with options: --all-servers Jul 11 15:14:59 Ashton /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Jul 11 15:14:59 Ashton /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Jul 11 15:15:00 Ashton /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: roland-50-1373548499_stS1XSHADrolandXSHADPP0_dp24 pre-start Jul 11 15:15:00 Ashton /usr/bin/x2gostartagent: successfully started X2Go agent session with ID roland-50-1373548499_stS1XSHADrolandXSHADPP0_dp24 Jul 11 15:15:00 Ashton /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Jul 11 15:15:00 Ashton /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Jul 11 15:15:00 Ashton /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: roland-50-1373548499_stS1XSHADrolandXSHADPP0_dp24 post-start Jul 11 15:15:00 Ashton /usr/bin/x2gostartagent: blocking creation of agent's keyboard file

/home/roland/.x2go/C-roland-50-1373548499_stS1XSHADrolandXSHADPP0_dp24/keyboard as requested by session startup command Jul 11 15:15:52 Ashton /usr/bin/x2goumount-session[31487]: x2goumount-session has been called with options: roland-50-1373548499_stS1XSHADrolandXSHADPP0_dp24 Jul 11 15:15:54 Ashton /usr/bin/x2goumount-session[31524]: x2goumount-session has been called with options: roland-50-1373548499_stS1XSHADrolandXSHADPP0_dp24 Jul 11 15:17:01 Ashton CRON[31876]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Jul 11 15:19:46 Ashton /usr/bin/x2golistdesktops[428]: x2golistdesktops has been called without options Jul 11 15:19:46 Ashton /usr/bin/x2golistsessions[432]: x2golistsessions has been called with options: x2goserver Jul 11 15:19:52 Ashton /usr/bin/x2gostartagent: x2gostartagent called with options: 1440x900 adsl 16m-jpeg-9 unix-kde-depth_24 us pc105/us 1 S 1XSHADrolandXSHAD:0 Jul 11 15:19:52 Ashton /usr/bin/x2gostartagent: client announced itself as ,,105.237.13.183'' Jul 11 15:19:52 Ashton /usr/bin/x2gostartagent: shadow session requested: mode 1, user: roland, desktop: :0 Jul 11 15:19:52 Ashton /usr/bin/x2gosessionlimit[496]: x2gosessionlimit has been called Jul 11 15:19:52 Ashton /usr/bin/x2golistsessions[499]: x2golistsessions has been called with options: --all-servers Jul 11 15:19:52 Ashton /usr/lib/x2go/x2gogetdisplays[513]: db_getdisplays called, server: Ashton; return value: Jul 11 15:19:52 Ashton /usr/lib/x2go/x2gogetports[523]: db_getports called, server: Ashton; return value: Jul 11 15:19:53 Ashton /usr/lib/x2go/x2goinsertsession[550]: db_insertsession called, session ID: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24, server: Ashton, session ID: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24 Jul 11 15:19:53 Ashton /usr/lib/x2go/x2goinsertport[562]: db_insertport called, session ID: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24, server: Ashton, SSH port: 30001 Jul 11 15:19:53 Ashton /usr/lib/x2go/x2goinsertport[574]: db_insertport called, session ID: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24, server: Ashton, SSH port: 30002 Jul 11 15:19:53 Ashton /usr/lib/x2go/x2goinsertport[587]: db_insertport called, session ID: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24, server: Ashton, SSH port: 30003 Jul 11 15:19:53 Ashton /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Jul 11 15:19:53 Ashton /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Jul 11 15:19:53 Ashton /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24 pre-start Jul 11 15:19:53 Ashton /usr/bin/x2gostartagent: successfully started X2Go agent session with ID roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24 Jul 11 15:19:53 Ashton /usr/bin/x2gofeature: x2gofeature called with options: X2GO_RUN_EXTENSIONS Jul 11 15:19:54 Ashton /usr/share/x2go/x2gofeature.d/x2goserver-extensions.features: x2goserver-extensions.features called with options: X2GO_RUN_EXTENSIONS Jul 11 15:19:54 Ashton /usr/bin/x2goserver-run-extensions: x2goserver-run-extensions called with options: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24 post-start Jul 11 15:19:54 Ashton /usr/lib/x2go/x2gocreatesession[680]: db_createsession called, session ID: roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24, cookie: 99946d36e5e8848f5f91951d5c1c6f67, client: xxx.yyy.13.183, pid: 645, graphics port: 30001, sound port: 30002, file sharing port: 30003 Jul 11 15:19:54 Ashton /usr/bin/x2gostartagent: blocking creation of agent's keyboard file

/home/roland/.x2go/C-roland-50-1373548792_stS1XSHADrolandXSHADPP0_dp24/keyboard as requested by session startup command

That last line: Is that because of the error, or is it causing the error?

thanks

Roland

...

Wether it helps or not, it would be great to see the server side of this, so please post the corresponding entries of your /var/log/syslog after configuring the x2goserver for debugging(set it in /etc/x2go/x2goserver.conf).

Nevertheless, the only Cookies I can think used by x2go are the MIT magic cookies of X... maybe try to delete the .Xauthority of the user trying to log in and retry...

Greetings, @Kjellski

2013/7/10 Roland Giesler <roland@giesler.za.net>

...

I must have read every mailing list and other posts I could find on Google regarding this problem. Nowhere was anyone able to identify the actual cause and fix for this problem.

How can this be? Does anyone know where the X2Go developer(s) hang out?

thanks

Roland Giesler +27 (0)72-450-2817 http://www.giesler.za.net

Disclaimer: The sender invokes the rule of "exemptus responsibilitus" pertaining to caffeine soluted inductions and/or decantations thereof into tactile communication interfaces and alternative apparatuses with respect to personal computation devices or otherwise implementations of electronic and/or bionic devices. This impartation is intended for the addressed party, unless conditions contrary to the aforementioned exist, in which case it is pertinent. Reduce without further ado to nothingness said impartation; alternatively "refrain from traversing the point of origination, be not enriched by 200 Randus and proceed without delay to enjailment".

On Thu, Jul 4, 2013 at 10:25 PM, Roland Giesler <roland@giesler.za.net> wrote:

...

bump.

anyone with help?

On Mon, Jul 1, 2013 at 11:36 PM, Roland Giesler <roland@giesler.za.net> wrote:

...

This error is most annoying to say the least, since no-where on the internet is an explaination of the cause nor the fix for it. Some people seem to have managed to get past it by luck.

This is an Ubuntu 12.04 64bit server that had nxserver install. One day (probably after some update, but it was too long ago to undo of trace now) the nxclient just stopped working.

I left it after many futile attempt to fix it. I have completely removed (purged) openssh-server and nxserver, nxnode and nxclient. Numerous times, apart from creating keys manually and more.

So I though, let me switch to X2Go. And lo and behold, I get the same error.

Strangely enough though, I can connect perfect to the server via SSH every time.

What causes this and how does one fix this please?

regards

Roland

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